Please explain with steps, thank you

ALGORITHM ComparisonCounting-Sort(A[0..n-1]) Sorts an array by comparison counting /Input: Array A[0..n- 1] of orderable values /Output: Array SIO.. 1of A's elements sorted / in nondecreasing order fori0 ton 1 do Counti]0 for i_ 0 to n _ 2 do for j _ + 1 to n _ 1 do CountCount[j]+1 else CountiCounti+1 fori0 to n- 1 do return S